Weft-replenishing mechanism for looms.



PATENTED FEB. 11, 1908.

J. BIM. WEFT REPLENISHING MECHANISM FOR LOOMS.

APPLICATION FILED DEO. 30,1904.

6 SHEET$-SHBET 1.

PATENTED FEB.'11, 1908.

J. BIM. WEPT REPLENISHING MECHANISM FOR LOOMS.

APPLIGATION FILED DEO.30,1904.

6 SHEETSSHEBT 2.

, mm/m PATENTED FEB. 11, 1908.

v J. BIM. WEFT REPLENISHING MEGHANISM FOR LOOMS.

APPLICATION FILED DEU.30,1904.

6 SHEETSSHEET 3.

ifilmi iig PATENTED FEB. 11, 1908.

J. BIM. WEFT REPLENISHING MECHANISM FOR LOOMS.

APPLIGATION FILED DEU.30,1904.

6 SHEETS-SHEET 5 R w G M v. N F E 7 QB d E S S E N WlT PATENTED FEB. 11,1908.

J. BIM. WEFT RBPLENISHING MECHANISM FOR LOOMS.

APPLICATION FILED DEG-30,1904.

6 SHEETS-SHEBT 6.

WITNESSES;

UNI ED STATES PATENT OFFICE.

' l JosEF 131M, or VIENNA, AUsTRiA-HUNGAR AssrGNoR TO UNION BANK, OFVIENNA,

AUSTRIA-HUNGARY.

No. emf/e3.

' Specification of Letters Patent. Application filed December 30. 1904.7 Serial No. 238.962-

WEFT-BEPLENI SHING MECHANISM FOR LOOMS.

Patented Feb. 1 1, 1908.

runs out the bobbin changing mechanism is set in o eration by a weftthread guard,'or the bobliin mechanism is supplemented by a weft feelerwhich when the weft on the b'obbins has been used up to a certain pointunder oes by the agency of appropriate media bobbins.

The mechanism for the. purpose is constructed'in sucha way that thecontrol of the bobbin change arrangement can either be carriedfinto'-elfect;by the weft thread guard consisting of the weft fork or by theweft feeler according to which'is preferred, the weft fork beingusedwhenplain goods are being produced and the feeler in case of fancygoods. In producing lain' good when a breakage of a thread ta es placeor the supplyof weft runs out it is sufficient that a c ange of bobbinstakes place and the loom is stop ed when this happens twice insuccession w ich may be the case if the bobbin changing mechanism doesnot work properly. "On the other. hand,lfor goods of a figured or fancy.description, the bobbin changing mechanism must 0.,erate before the weftbobbin is complete y exhausted whil'ein this case every t1me,a weftthread breaks or for any reason runsout, the loom must be stopped. Thearrangement which is the object of the present invention takes thesecircumstances into account'and possesses moreover a certain number of'advantages which will be explained in the course of cop' feeler (planview and sev'eral sections).'

Figs. 5 and 6 section on line A B ofFig. 4 in twopositions-of the parts..Fig. 7 section a displacement as'to cause achange of .3 line C D of ga.8 side elevation of v the whole apparatus 'n which a second posi- 'tionis shown by do ted lines Fig. 9 plan of the levers 6 7 & 10 when thelower lever is operated. Fig. 10 front elevation of the levers 6, 7, and10. Fig. 11 'plan of the lever a paratus when the two upper lovers arelocked to ether. Fig. 12 longitudinal section througi Fig. 11. Fig. 13cross section through the locking tongue 8. Fig. 14 section showingvertical lever 13 controlling the bobbin changing mechanism. Fig. 15plan of the center lever 6 with the top'lever removed. Fig. 16 is aview, partly in section of the new weft-replenishing device in connection with a loom slay and with a bobbin magazine and connections forsupplying bobbins singly therefrom. Figs. 17, 18 and.19,

are detail views, showing the relation and operation of the lever 3' andof the pin 14. v

a The weft fork-1, is pivoted upon a slide 34, and, when the loom isworking properly, is

usually depressed (see Figs. 8 and 16) at its free end by the warpthread,.insuch a way that its hooked end, towards the front of theloom*,is not likely to be engaged by the hammer 2 which is constantlyoscillating to and fro. If, however, the weft thread breaks or .isabsentrthe outer end of the fork 1'-is not depressed, and' its hookfalls and engages the hammer 2 (see Fig. 3); as a result, the fork andthe slide 34 are displaced or drawn back byithe hammer 2. f v i Theslide 34 wh'ch slides through a guide bracket 15 is in contact with apart 65 of a lever 6 Fig. 2. which is covered over by an upper lever 7(FlgSQQ, 10, 12.) and rests on a third lever 10. which lie one upon theother are all fulcrumed u on a common, s indle 44 of a plate 37 w ich isfittedon the right side of the breast beam. The three levers are freeabove the breast beam, cover one another and are actuated by threestrong springs 33 (Fig. 1..) which are also superimposed and which tend0 pgess back the three levers towards the as when the pin 44 has'beenloosened all three levers can easily be removed if necessary, replacedby others or repaired and with equal ease be reinstated in their workingposition. The center lever 6 has a recess- 6 H1130" The. three levers 6,7 and 10 of the loominto their position of rest, 4

which the coupling ton ue 8 can fall inorder' to connect the center ever6 with the top.

lever 7 so that both levers turn on their common ivo t 44 as if theywere one. The couphng tongue 8 which is pivoted on pin 8 (Fig. 12.) inthe top lever rests when in ac tion or coupling the levers on a pin 42in the recess of'the center lever, which limits the movement of thetongue. I The coupling tongueS'is usually held in its raised non-workingposition bv a plate 5 on pin 43 (Fig. 2.) on the center lever 6 in whichposition it lies level with the upper and lower surface of the lever 7.Then when the plate 5 assumes the position shown on. Fig. 2. the

tongue 8 falls down by the force of its own gravity and en ages in therecess of the center lever 6 coup ing or connecting both leverstogether.

angular projection 65 and usually occupies The center lever 6 which hasan the position shown in ig. 15 is displaced or moved back by the slide34 when a thread breaks, (as seen in Fig. 2.), as soon as it iscaused'to slide by the weft hammer 2 and the plate 5 on pivot 43 is alsodisplaced because it's projecting tongue shaped end 5]. is prevented byastop 52 from following the swing of the lever 6 so that the plate takesup the erationin the usual way a new bobbin being pressed into theshuttle and the old one ejected. The weft thread from the fresh bobbin(provided the change of bobbins has been effected properly) presses theweft fork 1 down at once: Conse uently the weft ham-' rn'er 2 on itsrenewed ar vance does not catch the weft fork and does not move theslide 34 with it. The front end of the weft hammer 2 strikes against theprojecting partofthe plate 5 (Fig. 2)- and rotates the same again uponits pivot 43 back to its original-position so that the plate covers therecess in the center lever 6 and the angular rejection 41 on the end ofthe plate raises t e tongue 8 and thereby uncouples or disconnects the-top lever 7 and the center lever 6. Therefore, when .the weft threadbreaks once, the weft fork 1 and with it the slide 34 are carriedforward by the weft hammer 2 on its advance, lever 6 and its late 5 aredisplaced so that the tongue 8 fa ls down and; the top lever- 7 and thecenter lever 6 are made ready for coupling, during which the "platepreserves the oblique position arising from its displacement even. whenthe weft hammer and'the lever 6 recde, so-that the top lever 7 and themiddle lever 6 are temporarily coupled,

but they are uncou led,.when the weft ham-.

mer moves forwar a second time as the latter carries back" plate 5 intoits position of rest as the shoulder 41 of the plate 5 again raises thetongue 8. Thelirst dis lacement of lever 6 sets in operation the bob inchang-' ing mechanism and in case this takes place properly all thepartsresume their original posltions when the weft hammeradvances aseeondtime. Should the weft thread for any reason fail twice say owingto the change of bobbins not being properly carried out and the weftfork 1 as well as the slide 34 be carried forward with the weft hammerwhen it advances twice in succession, then during the second advance ofthe weft hammer not only is the center lever 6 carried forward with it,but the top lever 7 also follows the movement of the bottom lever andthe loom stops at once. -In order to effect this the notch or recess 36(Fig. 2.) in the edge of the center lever 6 embraces the loom stop lever32 (Figs. 3'& 9) so that when lever 6 is alone displaced it d oes notcarryjthe stop lever forward with it. The stop lever 7 has however nosuch 'notch or recess and when it is displaced presses against the stoplever 32 which is then lifted out of its notch in the usual way andmoves the driving belt from the fast to the loose pullev thus stoppingthe loom.

From the above description it is clear-that after the weft hammer 2 hasadvanced and receded once, provided that the latter on the firstbreakage of the thread carried the weft fork and the slide 34" with it,it'displaced the middle lever 6 and the plate 5 in suchaway that theplate 5 even after the lever 6' has been restored to its position ofrest, preserves the position shown in Fig. 2. so that the couplingtongue 8 of the top lever f7 engages with the recess in the center lever6. Now if While this. plate is still in an oblique position, the, Wefthammer should carry the slide 34 with it a second time, the middle lever6 would also, be carried forward by this slide and the plate 5 wouldfollow this movement in its obli 'ue position, as it is pivoted to thelever on pin 43: Consequently its projecting v end cannot be struck bythe weft hammer 2. Therefore the plate will not be returned back intoits original position by the hammer and as in the oblique center lever 6an the u per lever 7 are coupled the latter will f0 low the forwardmovement of the lever 6 and stop the loom immediately. Therefore if theweft thread fails once a change of bobbins takes place, and if it failstwlce' in succession the loom sto' s. I

The action we have just described in which only the center and toplevers take part, is used when plain goods are being woven: As regardsthese if the weft thread fails once the loom should not be stopped butonly if it should fail twice in succession, that is, when the shuttlepicks twice without leaving a weft thread. In order to meet thesedilferosition of the plate the L firmly together for which urposes bothare erforated with a hole 9( igs. 2 8' 15.) the ole in one beingopposite tothat in the other. When required a in is inserted in thoseholes so as to lock t e two; levers to gether. Further the center lever6 is .pro-

vided with a notch or recess 6 (Figs. 14 &

15) which can embrace the arm 31 which operates the chan e of bobbins.But in the action described't e notch-or rece'ss 6 does not come into 0eration as a stud or pin-31 is screwed into t e top end of the arm 31and against the projecting head of this stud (Fig. 2.) the center lever6 presses when it swings forward and moves arm' 31 which actuates thechange of bobbins.

WVhen fancy goods are being woven the stud 31' is taken away and bymeans of the holes 9 and a pin therein the levers 6 and 7 are lockedtogether so that whenever a welt thread breaks, both levers are movedforward by the dis lacement of slide 34 and the loom is stoppe by thetop lever 7 in the manner described, while simultaneously the recess o''embraces the arm 31, without rocking the shaft 39 and accordinglyachange of bobbins does not take lace. Whenever therefore the weft threacfails owing to a breakage of same or the bobbin being quite em tyetcetera the loom is stopped without bobbin feeler 26 which acts u onthe arm31 to -perate the bobbin'changl'n mechanism as follows :-In orderthat the eeler 26 may only 0 erate when required, say for instance whenancy goods are beingwoven, it. is controlled by a special arrangementwhich moves with.the slay. On the front of the right shuttle box an arm29 is affixed to a spring tongue or swell which is pressed forward bythe shuttle when it enters the shuttle box. The arm 29 is adjusted bythe weaver before he commences to weave fancy oods into its workinposition. Each time t e slay moves forward 22 in the way shown in Figs;5 and 6 rovided a shuttle has enteredthe shuttle ox. The arm 22 ispivoted loosely on the shaft 20 and is actuated by a spring 30; it cantherefore be moved independently of the shaft 20. The shaft 20 on itspart is subject to the action of a spiral spring 24 (Fig. 7.) whichtends to turn the said shaft in the same direction (that shown by thearrows 1 in-Figs. 5 and 6)as that in which the arm 22 is moved by thearm 29 on the shuttle box. Ordinarily however the spring 24 cannotrotate the shaft 20 as a pin 23 projecting from the face of a disk 21afiixed thereto (Fi s. 1 and 4.) rests against the side of a note orflange of the sleeve of arm 22 (Fig. 5.) When the arm 22 is displaced ormoved roundthe the arm 29 strikes a depending. arm

shaft 20 as shown in Fig. 6. by the arm 29' on,

the forward movement'of the sla'y then the pin 23, its disk 21 and theshaft 20 follow the movements of the arm 22 provided there is nothingelse to prevent them. To the shaft 20 there is also aflixed an arm 27which carries the bobbin feeler 26 the position of which is adjustableby the screws 28.(Fi s. 1,3 and 8).

The bobbin feeler 26 only a mits ofshaft 20 being rotated as abovementioned if it is not prevented by the. bobbin. After the shuttlehasentered the right shuttle box it is "true; that as the slay inovesforward the arm 22 is always carried forward with itby the arm29 and isbrou' ht into the positionshown in 6. but thes aft 20 can only followthe movement of the arm 22 when the weft on the bobbin A' (Fig.8.) isused up to, a certain point as thefeeler 26 can then withoutbeingprevented-by the weft material descend sufficiently far toadrnit of arotation of the shaft. 20* to the re uired extent; As long as the bobbinis su ciently full the shaft 20 at every stroke of arm' 22 during theforward movement of the slay can only be rotated as far as the feelerwhich strikes the weft bobbin will permit. The shaft 20 carries an arm17 (Fi s; 1, 3 and 8.) provided with a stud 12 at its ree end; The endof the stud is flat and knocks against a screw 16 (Figs. 3 and'8.)projecting from a lever 13 pivoted on a stud 45 as'soon as the shaft20turns sufficiently and raises the lever 13. When the stud 12 raises thelever 13 by the aid of the screw 16 a cranked lever 38 pivoted on pin38" is released from a corresponding projection or notch 7'1 on theunder side of the lever 13 against which it usually rests, whereupon thelever 38 actuated by a spring swings .round the pi-n38 on which it ispivoted: The

The lever 3 is pivoted to the free end 1 110 at its free rear end it isshaped with ap'roj-ec tion to engage the weft hammer 2. When the levr3is depressed bythe actionof the pin 14 on the rotation of the shaft20.the pro jection on the under side is brought into the path of thewefthammer 2by which it is caught and carried forward. In Fig. 8 such arotation of the'shaft20 isrepresented as having taken place, that thestud 12 has raised the lever 13 on its pin 45 and released the lever 38and the pin 14 has depressed the lever 3 overbalancing weight 4.

The various parts are represented by continuous lines (Fig. 8) in theposition they 00- cup T before the weft hammer 2 has accomplis leditsforward'movement. The ,dotted lines show the position which the partsoccupy when the Weft hammer 2 has moved forward. The Weft hammer hascarried with it. the bottom lever 10 by means of lever 3 causing moved.

it to turn on its pivot 44 (Fig. 9). As the I lever 10 has a notch orrecess 10 in its edge which embraces the stop lever 32 itdoes not inturnin influence the stoppage of the loom, on the ot er hand when itturns it carries the arm 31 with itwhich causes the shaft 39 to rotateand thus operates the bobbin changing mechanism. p

. By means of the weft bobbin feeler 26 and the parts connected with ita change of hobbins is thus effected when the weft on the bobbin A hasbeen used up to within a certain quantity. The stoplpage of the-loom onthe other hand takes p ace after a second weft failure through theinstr'umentality of the weft fork, 1.

If no shuttle isin the shuttle box then on' the forward swing of'theslay the arm 29 which isattached to a s ring lever or swell at the frontof the shutt e'box is not moved sutliciently forward to displace the arm22 and consequently the shaft 20 (Fig. 5) is not The spring lever orswell at the front of the shuttle box which carries arm 29 is pressedout to some extent only when the shuttle enters the box in order thatarm 29 when'the slay moves forward may impart the requisite impact ,tothe arm '22. Therefore when no shuttle is in the shuttle box no changeof bobbins can take place; on the other hand the loom can be stopped inthe usual way .by the weft fork and weft "vice, and thebobbin-magazine97 (the mounting and details of which, here immaterial,are fully described and shown in an application, Serial No. 238950,filed December 30, 1904;). The releasedlong arm'18 has been thrown tothe ,position' shown, b v any suitable s ring or weight construction,and as a resu t of the operation. of such construction, a hammer 28 hasbeen thrown downwardly and has carried a bobbin 41 from the lower end ofthe bobbin-magazine to. the loom slay.

As Figs. 17, 18 and 19 show, the pin 14 is set-on an angle lever MFwhichcan swing around an axle 14 and pass bv its free end through thelongitudinal slot provided in the angle lever 38,; As long as thejangle.Fig. 17.

lever 38, as shown in Fig. 3, is held against the action of itssp'ringin raised position the various parts assume theposition shown in If thelever 13, Fig. 3, is lifted so that the angle lever can follow theaction of its spring freely, this angle lever is pulled down and reachesthe position shown in Fig.

end of this weft hammer is made so broad and fro it carries along thelever 3 when'this 18. s The pin 14. is thereby'pressed down by 'thelever 38 and brings the two-armed lever 3 into such a position that theweft hammer 2 can seize it. The forward hook-shaped that the weft fork 1and the lever 3 find place alongside of each other and that both cancome under the action of the hammer. As

the weft hammer 2 is moved continuously to is moved down intotheposition shown in Fig. 18 and shifts it sothat it reaches, theposition shown in Fig. 19. So that'the pin 14 should not stand as anobstacle it slides along somewhat ascendingly on,the interior edge ofthe lever 3. This is directly possible because the pin l-t is fixed onthe angle lever 14" which can swing freely around its axle 14*. The pin14 iscarried by the angle lever 14 in such a manner that it can followfreely each position of the angle lever 38 of the slot provided therein.

Fig. 16 corresponi ls to: the position of the parts in Fig. 19, while ithas been assumed that the two-armed lever 23 has not only entered intoengagement with the weft hammer. 2 but has-also been displaced by thelatter.

What I claim and desiret-o secure by Letters Patent is: p

"1. Weft changing apparatus for looms, comprising a weft fork, a lever 6actuated by said fork for operating .bobbin changing mechanism, a secondlever 7 for operating loom-stoppingmechanism, said levers being normallyuncoupled, and means for coupling the levers upon return movement of thefirst-named lever. a 2. Weft changing apparatus ,for looms, comprising aWeft fork, a lever 6 actuated by said fork for operating bobbin-changingmechanism, a second lever 7 for operating loom-stopping mechanism, saidlevers being normally uncoupled, 'andfmeans, including a latch on onelever for engaging a recess in the other lever, and a pivoted piece onone lever for operating said latch, for coupling the levers upon thereturn movement of the first-named lever. I

3. WVeft changing apparatus for looms, comprising a weft fork, a lever 6actuated by said fork, for operating bobbinchanging mechanism, a secondlever 7 and connections therefrom for operating a loom-stopping lever32-, said levers 6 and 7 being normally uncoupled, andv means forcoupling the levers 6 and 7 upon return movements of lever 6.

4. Weft changing apparatusfor looms, comprising a weft fork'l, an oscillting part 2, a slide 34 coupled with part 2 by the weft for'k, a lever'6 actuated by said slide for operating bobbinchanging mechanism, asecond lever 7 for operating loom-stopping mechanism, said levers beingnormall ,un coupled, and means for coupling the ever-s 130 upon returnmovements of the first-named fork, a lever for operating bobbinchanging" mechanism, a second lever for operating loom-stoppingmechanism, and connections whereby the slide 34 will crate the twolevers-in the succession named 6. Weft chan ing apparatus for looms,comprising a we t fork 1, an oscillating part 2, a slide 34 coupled withpart 2 by the weft fork, a lever 6. for operatin bobbin-changingmechanism, a lever 7' an a'loom-stopping part 32 operated thereby, alatch on one lever for engaging a recess in the ot er lever,

and a ivoted piece 5 on one of the levers forcontro ling the latchaforesaid. v

7. Weft changing apparatus for looms,

unused uantity of weft thread upon a bobbin, a ever for operating abobbinchanging mechanism, connections whereby the feeler operates saidlever, a lever 6 for also operating the bobbin-changing mechanism, and alever 7 for operating loomstopping mechanism, and a weft fork andconnections for operating lever 6.

8. Weft changing a paratus for looms, comprising a pivoted iieeler 26,means for lowering said feeler to the shuttle, an arm 22 for restrainisaid lowering operation, a

,spring-contro ed stop for controlling said arm 22, connections wherebythe slay dis-.

laces said arm, and connections from the eeler to a bobbin-changingmechanism.

9. Weft changing apparatus for looms,

comprising a pivoted feeler 26, a rotatable shaft controlled by thefeeler, a lever 13 lifted by said shaft, a stop lever 38 released bylever 13, a lever 3 controlled by lever 38, connections for operatingbobbin-changing mechanism, and an' oscillated part 2 with which, thelever 3 arranged to be con- ,nected'. comprising a weft-feeler 26controlled by the In witness whereof I' have hereunto set my hand in thepresence of two witnesses. i

' J OSEF BIM. Witnesses: ERNST ROH EN, O'r'ro LoBL.

